Product Description
CMT Mortising Bit - 3/4" x 3/4" with 1/2" Shank by CMT is a professional-grade router bit engineered for precise hinge mortising, lock pocket routing, and loose-tenon joinery. Featuring thick carbide tips and a negative shear angle design, this two-flute right-hand rotation bit delivers flat-bottom mortise slots with clean edges and smooth bottoms on both natural wood and wood composites. A top bearing guide makes it equally well suited for sign making and template routing work, giving woodworkers a versatile, reliable cutter for a wide range of applications.
Key Features
- Thick Carbide Tips (HW - Hard Metal Carbide) - resists wear during extended cutting sessions, maintaining sharpness and dimensional accuracy through demanding mortising tasks in solid hardwood and composite materials alike.
- Negative Shear Angle Design - shears material downward toward the workpiece, virtually eliminating splintered edges and rough bottoms so hinge mortises require little to no cleanup.
- Top Bearing Guide Included - rides along templates and patterns for consistent, repeatable cuts, making this bit a go-to choice for template work, sign making, and production hinge routing.
- Two-Flute (2-Tooth) Geometry - balances feed rate and finish quality, providing smooth chip evacuation and a clean, flat mortise floor on every pass.
- Right-Hand Rotation - matches the standard spindle direction of handheld routers, router tables, and CNC routing machines, ensuring safe, predictable performance without any adapter or modification.
- 1/2" Shank Diameter - the larger shank diameter reduces vibration and deflection compared to 1/4" shank bits, delivering superior control and a cleaner cut, especially in harder materials.
Why This Product
- The negative shear angle geometry combined with thick carbide tips means you get splinter-free edges and a smooth mortise bottom in a single pass - eliminating the hand-paring and cleanup that lesser bits require.
- The integrated top bearing guide unlocks dual-purpose use: precise hinge mortising guided by a template AND freehand sign lettering or decorative template work, all with one bit.
- A 3/4" cutting diameter paired with a full 3/4" cutting height means the bit removes material to the exact depth needed for standard hinge mortises in a single plunge, reducing machine passes and saving setup time.
- The 1/2" shank and carbide construction make this bit compatible with handheld routers, router tables, and CNC routing machines, giving hobbyists and production shops alike a dependable, multi-machine mortising solution.
Specifications
- Manufacturer Part Number: 801.690.11
- Brand: CMT Orange Tools
- Diameter: 3/4"
- Cutting Height: 3/4"
- Total Length: 2-1/4"
- Shank: 1/2"
- Number of Teeth: 2
- Rotation: Right-hand (RH)
- Material: HW (Hard Metal Carbide)
- Product Type: Mortising Router Bit
Approved Applications
- Hinge Mortising
- Lock Pocket Routing
- Slot Mortising
- Loose-Tenon Joinery
- Sign Making
- Template Routing and Pattern Work
Frequently Asked Questions
What machines is this mortising bit compatible with?
The 1/2" shank diameter on this CMT mortising bit fits handheld routers, router table setups, and CNC routing machines that accept a 1/2" collet. The right-hand rotation matches the standard spindle direction on all of these machines.
Can this bit cut hinge mortises in wood composites, or is it limited to solid wood?
This bit is designed to perform on both natural wood and wood composites. The thick carbide tips and negative shear angle deliver clean, flat-bottom slots without splintered edges in solid hardwood, softwood, plywood, MDF, chipboard, melamine, and laminates.
What is the purpose of the top bearing guide on this mortising bit?
The top bearing guide rides along the edge of a template or pattern, keeping the cut consistent and repeatable. This makes the bit especially useful for template routing, sign making, and production hinge mortising where identical results are needed across multiple workpieces.
What is the full cutting capacity of this bit?
This bit has a 3/4" cutting diameter and a 3/4" cutting height, with a total overall length of 2-1/4". The 3/4" cutting height allows it to rout a mortise to the full depth needed for most standard hinge applications in a single plunge pass.
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